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Each wire carries a different voltage.

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15y ago

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What is the purpose of a power cable?

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The ATX power supply and AT power supply had different connections for the computer motherboard. Also the ATX power supply had provision for some parts of the power supply to be switched on-and-off by the electronics on the motherboard, possibly under the control of software. With an AT power supply it necessary for the user to physically operate a switch. This control feature means that a computer that has an ATX power supply can provide, for example, a "wake-on-LAN" or "wake-on-modem" feature whereby the computer will switch itself on if their a signal on the ethernet cable or modem cable. If necessary it should be possible to adapt an ATX power supply to replace an AT power supply. This could be done by finding an adapter cable. The mother board cable from the ATX power supply would then plug into the adapter cable and the adapter cable would plug into the motherboard.


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Why do you need a huge power supply for your Desktop?

If you are not doing that much with your desktop a huge power supply is not needed, however for people who use their computer for more than basic things, you will simply need a Motherboard input a Cdrom power cable and a Hard drive cable and you will be fine.


A technician is troubleshooting a computer that has a malfunctioning floppy drive The technician observes that the floppy drive light remains lit constantly How should the technician attempt to repa?

The cable is probably damaged, or the idiot just plugged it in backwards. He should first attempt to plug the cable in upside-right. If that fails, he should then try a different floppy cable.


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A 350 watt power supply typically has multiple cables that connect to different components in a computer system. These cables typically include connectors for the motherboard, CPU, SATA drives, PCIe devices (such as graphics cards), and peripherals such as fans and lighting. Each cable leads to the corresponding component that requires power for proper operation.


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